Our space-time

Question :

If the sun disappears suddenly, which planet would fly out of orbit first?

I got it!That is Gravity

Where universal gravity comes from

God create

it

Does universal Gravity exist?

General Relativity

Space travel: dream of human

The distance between earth and Plutois 44000000000km

the velocity the fastest spaceshipis 48km/s

€

44000000000 ÷ 48 ≈ 29year

One way is to make the spaceship faster.

But the nearest fixed star is 4.9 light year from us

The shortest distance between two points on a paper

The shortest distance between two points on a paper

Worm Hole

space travel will no longer be a dream